Not legal 2 classes
Explicitly prohibited by this class document.
- Fixed Steering Ski Stock · FSSK
- Four Stroke Ski Lites · FSKL
IJSBA · Ignition
Aftermarket standalone ECU
Distinct from a reflash. Most stock classes allow the reflash and forbid the box.
The 'no additional inputs or outputs, original connections' clause is what disqualifies most standalone ECUs even in Limited and Superstock. Check pinout, not just brand.
Where it stands, class by class
14 classes, grouped by the answer rather than listed one by one, because an answer that holds for a class usually holds for every class that borrows its rules.
Not legal 2 classes
Four-stroke: reprogramming only.
- Runabout Naturally Aspirated · RNA
- Runabout Stock · RAS.7.2
Not legal 1 class
Aftermarket ECU is not listed as permitted. · RRL.5.2
Not legal 1 class
Only reprogramming of the original ECU is allowed. · SSK.5.2
The rules do not say 1 class
No electrical section exists.
- Ski Modified · SKM
The rules do not say 1 class
No ECU section found.
- Ski Superstock · SKSS
The rules do not say 1 class
ECU not mentioned. Verified absent.
- Runabout Open / GP · ROP
Legal, within limits 1 class
ECU may be modified OR aftermarket, provided it offers no additional inputs or outputs and uses original connections. · RAL.7.2
Legal, within limits 1 class
RSS.8.2
- Runabout Superstock · RSS
Legal 3 classes
Explicitly permitted by this class document.
- Freestyle · FREST
- Ski Grand Prix · SKGP
- Sport GP · SPGP
Aftermarket standalone ECU: if the rule your class applies reads differently to you, or the rulebook has changed since this was read, ask. We answer with the section we read it from, or that we have not read it. Ask a rules question.
Every IJSBA class · where the rulebooks differ · signed checks on parts the shop sells.
Ignition · four stroke · legal outright in 5 of 14